/*
 * Copyright 2012 The Netty Project
 *
 * The Netty Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */
package terra.network;

import java.net.InetSocketAddress;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.TimeUnit;

import org.jboss.netty.bootstrap.ServerBootstrap;
import org.jboss.netty.channel.Channel;
import org.jboss.netty.channel.group.ChannelGroup;
import org.jboss.netty.channel.group.DefaultChannelGroup;
import org.jboss.netty.channel.socket.nio.NioServerSocketChannelFactory;
import org.jboss.netty.handler.execution.OrderedMemoryAwareThreadPoolExecutor;

import terra.BootStrap;
import terra.NetworkConfig;
import terra.network.packet.Packet;

public class Server {

    public ChannelGroup all = new DefaultChannelGroup();
	public ServerBootstrap bootstrap;
	
    public void init() {
    	if (BootStrap.mode != BootStrap.SERVER_MODE)
    		return;
    	ExecutorService bossExec = new OrderedMemoryAwareThreadPoolExecutor(1, 0, 0, 60, TimeUnit.SECONDS);
    	ExecutorService ioExec = new OrderedMemoryAwareThreadPoolExecutor(100, 0, 0, 60, TimeUnit.SECONDS);
    	
        bootstrap = new ServerBootstrap(
                new NioServerSocketChannelFactory(bossExec,ioExec));
        bootstrap.setPipelineFactory(new PipelineFactory());
        bootstrap.setOption("child.sendBufferSize", NetworkConfig.sendBufferSize); 
        bootstrap.setOption("child.receiveBufferSize",  NetworkConfig.receiveBufferSize);
        bootstrap.setOption("child.tcpNoDelay", NetworkConfig.tcpNoDelay);
        bootstrap.setOption("tcpNoDelay", NetworkConfig.tcpNoDelay);
        bootstrap.bind(new InetSocketAddress(NetworkConfig.port));
        System.out.println("Server port: "+ NetworkConfig.port +" is binded");
    }
    
    private static Server instance;
    
    public static Server getInstance(){
    	if (instance == null)
    		instance = new Server();
    	return instance;
    }
    
    public static void broadcast(Packet p){
    	if (p==null || getInstance().all.size() == 0)
    		return;
    	for(Channel ch : getInstance().all){
    		if (ch.isWritable())
    			ch.write(p);
    	}
    }
    
}
